Cash, absolutely valid question. This has been my problem too. I know something is about to move up and I end up waiting too long to confirm and then I get in late and then I can't hold fearing that it's gonna reverse. example: VOL on the day it reported earnings and many many more. So the solution for this is: Buy half before the move based on your gut feeling, then confirm the move and buy the rest. I think this works pretty well. If you decide to try it, let me know how it works for you.